SYRINGE WITH NEEDLE GUARD INJECTION DEVICE

摘要

The present invention provides for an injection device including a syringe with a proximal end, a distal end, a needle extending from the distal end, and a plunger inserted into the proximal end. A guard is slidable on the syringe, has a proximal end, a distal end, and is biased from a first position wherein the needle is exposed towards a second position wherein the guard covers the needle. The injection device includes first and second sets of cooperating detents for retaining the guard and syringe in the first and second positions, respectively. A latch member extends proximally from the guard that is engageable by the plunger as the plunger is depressed to release the first set of cooperating detents. Upon release, a spring element biases the guard towards the second position until the second set of cooperating detents engage and secure the guard in the second position.

主权项

1. An injection device, comprising:
a syringe comprising a proximal end, a distal end, and a plunger extending from the proximal end, the syringe having proximal and distal pockets; a guard slidably attached to the syringe and having a proximal end and a distal end, the guard being biased from a first position wherein the distal end of the syringe is exposed towards a second position wherein the guard covers the distal end of the syringe; first cooperating detents on the syringe and guard for retaining the guard in the first position; second cooperating detents on the guard for engaging the syringe pockets for retaining the guard in the first position, and for retaining the guard in the second position; and a latch member coupled to the guard, the latch member being engageable by the plunger as the plunger is advanced into the syringe for releasing the first cooperating detents whereupon the guard may slide toward the second position.